//=============================================================================
//===	Copyright (C) 2001-2007 Food and Agriculture Organization of the
//===	United Nations (FAO-UN), United Nations World Food Programme (WFP)
//===	and United Nations Environment Programme (UNEP)
//===
//===	This program is free software; you can redistribute it and/or modify
//===	it under the terms of the GNU General Public License as published by
//===	the Free Software Foundation; either version 2 of the License, or (at
//===	your option) any later version.
//===
//===	This program is distributed in the hope that it will be useful, but
//===	WITHOUT ANY WARRANTY; without even the implied warranty of
//===	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//===	General Public License for more details.
//===
//===	You should have received a copy of the GNU General Public License
//===	along with this program; if not, write to the Free Software
//===	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//===
//===	Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//===	Rome - Italy. email: geonetwork@osgeo.org
//==============================================================================

package org.fao.geonet.services.category;

import jeeves.constants.Jeeves;
import jeeves.interfaces.Service;
import jeeves.resources.dbms.Dbms;
import jeeves.server.ServiceConfig;
import jeeves.server.context.ServiceContext;
import jeeves.utils.Util;

import org.fao.geonet.constants.Geonet;
import org.fao.geonet.constants.Params;
import org.fao.geonet.lib.Lib;
import org.jdom.Element;

//=============================================================================

/**
 * Retrieves all categories in the system
 */

public class List implements Service {
	public void init(String appPath, ServiceConfig params) throws Exception {
	}

	// --------------------------------------------------------------------------
	// ---
	// --- Service
	// ---
	// --------------------------------------------------------------------------

	public Element exec(Element params, ServiceContext context)
			throws Exception {
		String category_parent = Util.getParam(params, Params.PARENT_ID, null);
		System.out.println("catlist category_parent->"+ category_parent );
		Dbms dbms = (Dbms) context.getResourceManager()
				.open(Geonet.Res.MAIN_DB);
		return Lib.local.retrieve(
				dbms,
				"Categories",
				" id_category_parent"
						+ ((category_parent == null) ? " IS NULL " : " = "
								+ category_parent)).setName(
				Jeeves.Elem.RESPONSE);
	}
}

// =============================================================================

